CN106025407B - A kind of method of battery of electric bicycle capacity restoration - Google Patents
A kind of method of battery of electric bicycle capacity restoration Download PDFInfo
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- CN106025407B CN106025407B CN201610450934.4A CN201610450934A CN106025407B CN 106025407 B CN106025407 B CN 106025407B CN 201610450934 A CN201610450934 A CN 201610450934A CN 106025407 B CN106025407 B CN 106025407B
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- battery
- electric bicycle
- amperes
- capacity restoration
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention discloses a kind of methods of battery of electric bicycle capacity restoration, the battery of electric bicycle includes several single batteries, the described method includes: (1) screens the battery of electric bicycle that market is retracted, only select that all single battery open-circuit voltages are all larger than 12V and battery of electric bicycle of the difference in open circuit voltage in 100mV is as process object；(2) single battery in satisfactory battery of electric bicycle is taken, 0-3V is overdisharged to 0.1-0.2C amperes of electric current；(3) after the completion of discharging, modified constant-voltage charge is carried out to single battery.The present invention uses low current deep discharge mode, and dissolution is deposited on the various oxides of lead sulfate or lead between grid and positive active material；Cooperate charging again, dissolved matter part forms positive active material, makes capacity resuming to rated capacity or more, and do not influence on battery life, fully meet the requirement of user, reduce the loss of enterprise.
Description
Technical field
The present invention relates to lead storage battery fields, and in particular to a kind of method of battery of electric bicycle capacity restoration.
Background technique
Lead storage battery is the widest battery of current use scope, and development lasted for more than 150 years from 19th century so far.?
In very long lead storage battery evolutionary history, the lead storage battery suitable for different purposes has been emerged in large numbers.
Last decade is the stage of Chinese electric bicycle fast development, and electric bicycle ownership is at 200,000,000 or more so far,
Battery of electric bicycle has become one of most important application of lead storage battery.
Battery of electric bicycle belongs to power battery scope, and the battery of electric bicycle of the past country is mainly with Pb-Sb-Cb
Based on alloy, the battery made of this alloy is to the of less demanding of technique and production equipment, it is easy to it is substantially full to produce user
The product of meaning.But since the dehydration of this alloy is higher, battery is easy dehydration, causes the thermal runaway of battery.Simultaneously this alloy due to
Containing cadmium, the insulting bone of meeting, due to the requirement of environmental protection, such alloy has been in disabled status.
Now, the grid alloy of battery of electric bicycle is mainly based on Pb-Ca-Sn-Al alloy, but this alloy is easy to make
At premature capacity loss, although can moderately improve the deeper cavity service life of battery by the adjustment of Theil indices, lead-calcium alloy is easy
Intercrystalline corrosion is formed, while creep resisting performance is poor, therefore, people by adding bismuth metal/silver/terres rares object in the alloy
Matter further increases the performance of lead-calcium alloy.
Battery of electric bicycle manufacturer generally provides user 15 months quality guarantee periods, and the battery retracted in early days is main
The reason of being battery production, the damage of the connector as caused by pole plate burr/lead plaster protrusion/terminal rosin joint, these batteries are being retracted
Battery pack in be easy to search battery the reason of returning to.But it using a kind of new failure mode is generated after new alloy, dissects
Battery, pole plate and partition appearance are good, do not find significantly to make defect, but the discharge time of battery is obviously shortened, with normal
The capacity of the processing method battery of rule cannot restore.
It is very short to there is the distance that the battery user of above-mentioned phenomenon is usually ridden daily, and charges daily, as a result makes
It is obviously shortened with the distance of riding of in two to three months battery, the battery open circuit voltage retracted is almost the same, in 12V or more, electric discharge
Time is at 84 minutes hereinafter, cannot be restored with the capacity of conventional charge and discharge system battery, battery, which can only be done, scraps processing.
The patent document of Publication No. 101093904A discloses a kind of restoration methods of improper capacity loss of accumulator,
It is mainly carried out by following operating procedure: battery is connected on charge-discharge machine；Extremely with the current discharge of 3A~5A by battery
0V continues with electric current constant current reverse charge 60min~120min of 3A~5A；At once with 5A current limliting after battery reverse charge,
14.6V/ pressure limiting constant-voltage charge, constant-voltage charge to electric current stop when being less than 0.3A.The invention by valve-control storage battery overdischarge,
That is reverse charge makes internal storage battery generate high temperature, then charges at high temperature to battery, to make corrosion layer high resistant at high temperature
It by charging forces that it is made to be converted into active material again because solubility increases, so that accumulator capacity be enable to restore.But
It was verified that the battery that the restoration methods obtain, after by charge and discharge several times, battery capacity quickly decays, no again
It can guarantee battery life.Reason is analyzed, corrosion layer is generally the lead oxide of lead sulfate or low price, and battery reverse charge makes to corrode
Layer is converted into spongy lead, and in this way after charging normal, positive active material brown lead oxide is easy to react with spongy lead, again
Form lead sulfate or lead oxide.
In order to reduce the loss of enterprise, a kind of method for providing fast quick-recovery accumulator capacity makes its life performance not
Impacted is our urgent problems.
Summary of the invention
The present invention provides a kind of methods of battery of electric bicycle capacity restoration, and the battery that market is retracted is by simple
Charge and discharge after make capacity restoration to factory calibration, and life performance is unaffected, and has both met the requirement of user,
Reduce the loss of enterprise again.
A kind of method of battery of electric bicycle capacity restoration, the battery of electric bicycle include several monomers electricity
Pond the described method comprises the following steps:
(1) battery of electric bicycle that market is retracted is screened, only selects all single battery open-circuit voltages big
In 12V and difference in open circuit voltage, the battery of electric bicycle within 100mV is as process object；
(2) single battery in satisfactory battery of electric bicycle is taken, with 0.1-0.2C amperes of electric current overdischarge
To 0-3V；
(3) after the completion of discharging, modified constant-voltage charge is carried out to single battery.
The battery of electric bicycle is the battery pack of several single batteries composition.The voltage rating of single battery is
12V, C refer to the rated capacity of single battery.
The battery of electric bicycle retracted for market the study found that the failure cause for having percentage of batteries is due to user
Ride apart from short, but frequent overcharge, positive active material caused to change under high voltages, grid and active material it
Between between positive active material generate barrier layer (including lead sulfate or lead oxide) so that battery capacity degradation.It is such
The open-circuit voltage of single battery is almost the same in battery, and in 12V or more, and open-circuit voltage difference is within 100mV.
Using valve control battery during undergoing deep discharge, the sulfate radical in electrolyte is largely consumed the present invention, electrolysis
Liquor ratio reduces again and moves closer to pure water specific gravity；Meanwhile the phase internal resistance of cell increases after discharge, internal temperature increases, hot at this time
Low-gravity acid solution increases the solubility on barrier layer, achievees the purpose that dissolve barrier layer；Cooperate quick charge again, makes to be partly dissolved
Barrier substance be converted to positive active material, so that battery capacity be enable to restore, and can be protected in subsequent charge and discharge
The satisfactory texture for holding active material reaches the requirement of user's normal use.
Preferably, first carrying out supplement electricity before overdischarge.The battery that market is retracted through for a long time place after battery capacity into
The loss of one step, supplement electricity convert cell active materials sufficiently.
The benefit is charged as constant pressure 14.7-14.9V, and cut-off current is 0.1-0.3C amperes of charging 10-12h.The supplement electricity
It is carried out under the conditions of 25 ± 5 DEG C.
Preferably, carrying out overdischarge under the conditions of single battery is placed in 25 ± 5 DEG C in step (2).
The performance that battery will not be significantly affected to battery charging and discharging at room temperature, in the deep discharge later period, the internal resistance of cell
Increase, internal temperature can be increased to 40 DEG C or so.
Preferably, electric discharge initial stage is first discharged to 6-10.2V with 0.3-0.5C amperes of constant current, then in step (2) with constant current
0.1-0.2C amperes of electric discharges.
Since internal resistance is high before not handling for the battery of the invention handled, battery is often such as made using larger current electric discharge always
Temperature it is excessively high cause battery case to deform, make charger undercurrent cisco unity malfunction sometimes.It can using the purpose of two-step method
With moderate reduction temperature rise, battery is protected.Wherein the low current of second step can sufficiently discharge the electricity of battery, while temperature liter
Height is to being no more than 40 DEG C, and electrolyte density makes barrier layer solubility liter substantially close to the specific gravity of pure water after such battery deep discharge
It is high.
More preferably, electric discharge initial stage is first discharged to 10.2V with 0.5C amperes of constant current, then in step (2) with constant current 0.1C peace
Training is discharged to 2V.
Preferably, with constant pressure 14.7-14.9V, cut-off current is 0.1-0.5C amperes of charging 5-12h in step (3).Institute
Charging is stated to carry out under the conditions of 25 ± 5 DEG C.
To guarantee reasonable charge volume, the battery longest charging time is controlled in 15h, makes charge volume and step in step (3)
Suddenly the ratio of discharge capacity is 1.01-1.2 in (2).
It is 0.5C with current value under the conditions of 25 DEG C that the single battery that the method for the present invention is restored, which carries out volume test,
Ampere discharges, and discharge time reaches 120 minutes or more, as qualified.
Research has shown that, the cycle life for the single battery that the method for the present invention is restored can achieve 350 times or more, completely
It can satisfy the requirement that user uses 1 year or more.
The qualified single battery of detection charges in the way of step (3), and charged postposition stands 24 at room temperature
Hour, then carry out combo.Difference in open circuit voltage is less than the single battery of 30mV and discharge time difference within 1 minute as one
Group carries out combo, and the good battery of combo can be by normal product shipment.
It is that the present invention has that the utility model has the advantages that the present invention is dissolved using low current deep discharge mode, to be deposited on grid and anode living
Property substance between lead sulfate or lead various oxides, play the role of eliminate barrier layer；Cooperate charging again, is partly dissolved object
The positive active material seldom without barrier layer or barrier layer is formed, is reduced between grid and active material and active material
Resistance makes capacity resuming to rated capacity or more, and does not influence on battery life, and the use for fully meeting user is wanted
It asks, reduces the loss of enterprise.
Detailed description of the invention
Fig. 1 is the cycle life testing result figure of battery after capacity restoration in embodiment 2.
Specific embodiment
For a better understanding of the present invention, below with reference to embodiment and attached drawing, the invention will be further described.
Embodiment 1
A 6-DZM-12 electric bicycle is retracted battery and is screened: all single battery open-circuit voltages being selected to be all larger than
The battery of electric bicycle of 12V and difference in open circuit voltage within 100mV takes satisfactory electric bicycle as process object
Single battery in battery.
B supplement electricity: voltage control is controlled into the electric current charging 10h in 1.2A in 14.7V cut-off current.
C places battery in the sink, and is placed in 25 DEG C of environment temperatures, discharges into 10.2V using 6A to battery, records
Discharge time t1,1.2A carry out being discharged to cell voltage 2V, record discharge time t2.
D constant pressure 14.7V current limliting 0.2C charging 10h.
E records discharge time t3 with 6A electric discharge 10.2V, then discharges into 2V with 1.2A, records discharge time t4.As a result see
Table 1.
Table 1: the discharge time record of battery
| Before processing | After processing | |
| 6A discharges into 10.2V | 78min | 122min |
| 1.2A discharges into 2V | 480min | 200min |
By upper table, statistics indicate that, untreated battery, due to the presence of the barrier layer, the internal resistance of cell are high, under high voltages
Discharge time is shorter, can only discharge at low voltage.But pass through over-discharge electric treatment, then the battery charged normal is with the electric current of 6A
The time for discharging into 10.2V reaches 120 minutes or more, and the discharge capacity of battery reaches 12Ah or more, and meet that user uses wants
It asks.
Embodiment 2
A 6-DZM-20 electric bicycle is retracted battery and is screened: all single battery open-circuit voltages being selected to be all larger than
The battery of electric bicycle of 12V and difference in open circuit voltage within 100mV takes satisfactory electric bicycle as process object
Single battery in battery.
B supplement electricity: by 6-DZM-20 single battery constant pressure 14.7V current limliting 2.0A charging 10h.
C places single battery in the sink, and is placed in 25 DEG C of environment temperatures, is discharged to battery using 10A
Cell voltage 10.2V records discharge time T1, continues with 2.0A current discharge to 2V, record discharge time T2.
D uses constant pressure 14.7V, current limliting 4.0A charging 10h.
E records discharge time T3 with 10A electric discharge 10.2V, then discharges into 2V with 2A, records discharge time T4.It the results are shown in Table
2。
The discharge time of table 2:20Ah battery records
| Before processing | After processing | |
| 10A discharges into 10.2V | 21.6min | 132min |
| 2A discharges into 2V | 717min | 135min |
From the results shown in Table 2, by over-discharge electric treatment, 20Ah battery 10A discharge capacity can be enable to restore
To more than rated capacity, the requirement of user can satisfy early period.
F restores the cycle life test of battery
Carried out cycle life test with the single battery restored, as a result as shown in Figure 1, the cycle life of battery still
It can achieve 350 times or more, can satisfy the requirement that user uses 1 year or more completely.
Claims (7)
1. a kind of method of battery of electric bicycle capacity restoration, the battery of electric bicycle includes several single batteries,
It is characterized in that, the described method comprises the following steps:
(1) battery of electric bicycle that market is retracted is screened, all single battery open-circuit voltages is only selected to be all larger than 12V
And battery of electric bicycle of the difference in open circuit voltage within 100mV is as process object；
(2) single battery in satisfactory battery of electric bicycle is taken, is first discharged to 6- with 0.3-0.5C amperes of constant current
10.2V, then 0-3V is discharged to 0.1-0.2C amperes of constant current；
(3) after the completion of discharging, modified constant-voltage charge is carried out to single battery.
2. the method for battery of electric bicycle capacity restoration as described in claim 1, which is characterized in that advanced before overdischarge
Row supplement electricity.
3. the method for battery of electric bicycle capacity restoration as claimed in claim 2, which is characterized in that the supplement electricity are as follows:
Constant pressure 14.7-14.9V, cut-off current are 0.1-0.3C amperes of charging 10-12h.
4. the method for battery of electric bicycle capacity restoration as described in claim 1, which is characterized in that, will be single in step (2)
Body battery carries out overdischarge under the conditions of being placed in 25 ± 5 DEG C.
5. the method for battery of electric bicycle capacity restoration as described in claim 1, which is characterized in that in step (2), electric discharge
Initial stage is first discharged to 10.2V with 0.5C amperes of constant current, then is discharged to 2V with 0.1C amperes of constant current.
6. the method for battery of electric bicycle capacity restoration as described in claim 1, which is characterized in that in step (3), with perseverance
14.7-14.9V is pressed, cut-off current is 0.1-0.5C amperes of charging 5-12h.
7. the method for battery of electric bicycle capacity restoration as claimed in claim 6, which is characterized in that charging in step (3)
The ratio of amount and discharge capacity in step (2) is 1.01-1.2.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021096976A1 (en) * | 2019-11-12 | 2021-05-20 | Hunt Energy Enterprises, L.L.C. | Capacity regenerable excess electrolyte zn ion battery |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108281718B (en) * | 2017-12-28 | 2019-11-05 | 浙江赫克力能源有限公司 | A kind of restorative procedure of waste and old lead acid accumulator |
| CN110212256B (en) * | 2019-04-23 | 2020-10-23 | 天能电池集团股份有限公司 | Repairing and matching method for returned storage batteries |
| CN110988689B (en) * | 2019-04-25 | 2021-05-25 | 宁德时代新能源科技股份有限公司 | Recovery method, device and system for recoverable attenuation capacity of battery |
| CN111416162B (en) * | 2020-03-05 | 2021-10-15 | 天能电池集团股份有限公司 | Repairing method of electric bicycle battery |
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| JPH09306536A (en) * | 1996-05-15 | 1997-11-28 | Shin Kobe Electric Mach Co Ltd | Manufacture of lead-acid battery |
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| CN104953191A (en) * | 2015-05-07 | 2015-09-30 | 国网河南省电力公司电力科学研究院 | Restoration method for performances of transformer substation returned lead-acid storage battery |
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| JPH09306536A (en) * | 1996-05-15 | 1997-11-28 | Shin Kobe Electric Mach Co Ltd | Manufacture of lead-acid battery |
| CN102324582A (en) * | 2011-08-12 | 2012-01-18 | 重庆东电通信技术有限公司 | Intelligent maintenance device of multifunctional lead-acid battery and capacity prediction method |
| CN103579694A (en) * | 2012-07-24 | 2014-02-12 | 刘粤荣 | Storage battery restoration system and restoration method thereof |
| CN104953191A (en) * | 2015-05-07 | 2015-09-30 | 国网河南省电力公司电力科学研究院 | Restoration method for performances of transformer substation returned lead-acid storage battery |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2021096976A1 (en) * | 2019-11-12 | 2021-05-20 | Hunt Energy Enterprises, L.L.C. | Capacity regenerable excess electrolyte zn ion battery |
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Address after: 313100 Coal Mountain Industrial Park, Changxing County, Huzhou City, Zhejiang Province Patentee after: Tianneng Battery Group Co., Ltd. Address before: 313100 Coal Mountain Industrial Park, Changxing County, Huzhou City, Zhejiang Province Patentee before: Tianneng Battery Group Co., Ltd. |
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